Water spillage after applying stainstop - Tile Advice

[sj1709]

I applied Lithotin stainstop to my newly installed sandstone tiles. Shortly after i had an issue with a water pipe and the stone got wet. Now there are dark puddles have dried on the stone and remain after a week. How do i remove the dark puddles?!

 

[Tile Marble Granite]

I applied Lithotin stainstop to my newly installed sandstone tiles. Shortly after i had an issue with a water pipe and the stone got wet. Now there are dark puddles have dried on the stone and remain after a week. How do i remove the dark puddles?!

Send us some pictures if possible. That would be great.